题干
A healthy heart is very important for giving life to the full, at_________ age you are or whether you are a male or female.
A：what
B：which
C：whatever
D：whichever
答案(点此获取答案解析）
C
会成员划分为地主阶级、
工人阶级和资产阶级三大阶级。其划分的根据是（ ）